FIRE RESEARCH CORP.
26 SOUTHERN BLVD. NESCONSET, NY 11767 USA
TOLL FREE (800) 645 0074
FAX (516) 360 9727
Appendix xxi
DIAGNOSTIC CODES
diagnos.pm6
The PRO3 and RTU3 will display diagnostic codes whenever there is a problem with the units. This is very useful particularly for the electrical techni-
cian and mechanic in troubleshooting the system.
NOTE : E1, E2, E4, and E6 are reserved for the electronic engines.
PRO 3
&
RTU 3
for Mechanical Engines
Code Issued
Problem detected
Probable causes
E 3
RPM signal is not detected
1) The RPM sensor might not be connected.
2) Bad RPM sensor.
3) Make sure there are 4 magnets on the drive shaft and the spacin
magnets and the drive shaft is approximately 0.25" to 0.5"
4) The magnets are to be spaced 90 degrees apart, w ith N-S-N-S o
5) The pump is not engaged and the drive shaft is not turning.
E 5
Discharge pressue transducer not
detected
1) Bad contacts on the discharge pressure transducer
2) Discharge pressure transducer is unpluged
E 7
Unable to regulate in pressure control
mode
1) The discharge pressure transducer cannot detect the pump pres
valve might not be opened, pump not primed, etc.
2) Bad discharge pressure transducer
Summary of Contents for GOVERNOR PRO 3
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